21811772

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{2633}}^1$

素因数の和:2765

約数の個数: 24

約数和(自身を含む): 40563600

約数和(自身を除く): 18751828

約数列:

[1, 2, 4, 19, 38, 76, 109, 218, 436, 2071, 2633, 4142, 5266, 8284, 10532, 50027, 100054, 200108, 286997, 573994, 1147988, 5452943, 10905886, 21811772]

約数ペア:

[(1, 21811772), (2, 10905886), (4, 5452943), (19, 1147988), (38, 573994), (76, 286997), (109, 200108), (218, 100054), (436, 50027), (2071, 10532), (2633, 8284), (4142, 5266)]